package com.mng.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.mng.dao.BookDao;
import com.mng.domain.Book;
import com.mng.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class BookServiceImpl implements BookService {
    @Autowired
    public BookDao bookDao;
    @Override
    public Boolean save(Book book) {
        return bookDao.insert(book) > 0;
    }

    @Override
    public Boolean update(Book book) {
        return bookDao.updateById(book) > 0;
    }

    @Override
    public Boolean delete(Integer id) {
        return bookDao.deleteById(id) > 0;
    }

    @Override
    public Book getById(Integer id) {
        return bookDao.selectById(id);
    }

    @Override
    public List<Book> getAll() {
        return bookDao.selectList(null);
    }

    @Override
    public IPage<Book> getPage(int currentPage, int pageSize) {
        IPage<Book> page = new Page<>(currentPage,pageSize);
        bookDao.selectPage(page,null);
        return page;
    }

    @Override
    public IPage<Book> getPage(int currentPage, int pageSize, Book book) {
        IPage<Book> page = new Page<>(currentPage,pageSize);
        LambdaQueryWrapper<Book> bookLambdaQueryWrapper = new LambdaQueryWrapper<>();
        bookLambdaQueryWrapper.eq(!book.getName().isEmpty(),Book::getName,book.getName());
        bookLambdaQueryWrapper.eq(!book.getType().isEmpty(),Book::getType,book.getType());
        bookLambdaQueryWrapper.eq(!book.getDescription().isEmpty(),Book::getDescription,book.getDescription());
        bookDao.selectPage(page,bookLambdaQueryWrapper);
        return page;
    }
}
